基于DS12C887实时时钟和DS18B20温度传感器的数字时钟。可调整时分秒年月日星期，可设置时分秒的闹铃，精确到十分位的当前环境实时温度显示。-DS12C887-based real-time clock and temperature sensor DS18B20 digital clock. Adjust the minutes and seconds when the month, day week, minutes and seconds of the alarm can be set accurately to the very place of the current environment, real-time temperature display.